1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
17 Revision 1.8 2002/04/16 10:52:41 hristov
18 Wrong usage of exit() corrected (Sun)
20 Revision 1.7 2002/04/15 08:04:01 alla
21 Digits and reconstruction with TObject
23 Revision 1.6 2001/10/19 05:29:38 alla
26 Revision 1.5 2001/07/27 13:03:12 hristov
27 Default Branch split level set to 99
29 Revision 1.4 2000/12/22 16:17:15 hristov
30 Updated START code from Alla
32 Revision 1.3 2000/10/02 21:28:13 fca
33 Removal of useless dependecies via forward declarations
35 Revision 1.2 2000/07/13 16:41:29 fca
36 New START corrected for coding conventions
38 Revision 1.1 2000/03/24 17:46:58 alla
43 #include "AliSTARTvertex.h"
44 #include "AliSTARTdigit.h"
45 #include "AliSTARThit.h"
51 #include "TDirectory.h"
56 ClassImp(AliSTARTvertex)
58 AliSTARTvertex::AliSTARTvertex( Int_t * Zposit)
61 // The creator for the AliSTARTvertex class. This routine fills the
62 // AliSTARTvertex data members from the array vertex.
63 // The order of the elements in the vertex array are
64 // fZposition = vertex[0],
67 Zposit = &fZposition ;
70 void AliSTARTvertex::Reconstruct(Int_t evNumber=1)
72 /***************************************************
73 Resonstruct digits to vertex position
74 ****************************************************/
78 char nameTD[8],nameTR[8];
80 AliSTARTdigit *digits;
81 AliSTARTvertex *fvertex;
83 digits = new AliSTARTdigit();
84 fvertex = new AliSTARTvertex();
86 // Event ------------------------- LOOP
88 // gAlice->GetEvent(evNumber);
90 sprintf(nameTD,"START_D_%d",evNumber);
91 TObject *td = (TObject*)gDirectory->Get(nameTD);
92 printf("%s\n",nameTD);
95 cerr<<"something wrong with output...."<<endl;
100 if(digits->GetTimeDiff()<TMath::Abs(1000))
102 timediff=digits->GetTimeDiff(); //time in number of channels
103 timePs=(512-timediff)*2.5; // time in Ps channel_width =10ps
104 cout<<"timediff "<< timediff<<" timePs "<<timePs<<endl;
105 // Float_t c = 299792458/1.e9; //speed of light cm/ps
106 Float_t c = 0.3; //speed of light mm/ps
107 Float_t Zposit=timePs*c;// for 0 vertex
108 cout<<" Zposit "<<Zposit<<endl;
109 fvertex->Set((Int_t) Zposit);
112 TTree *outTreeR = gAlice->TreeR();
114 cerr<<"something wrong with output...."<<endl;
118 sprintf(nameTR,"START_R_%d",evNumber);
119 printf("%s\n",nameTR);
120 // TDirectory *wd = gDirectory;
121 // outTreeR->GetDirectory()->cd();
122 fvertex->Write(nameTR);